Fundertaker on "[Plugin: Random / Rotating Ads V2] Ads in post"

Some how I figured out how to insert ads into blog postings, I remember the day i figured out how to do it. I was pretty excited!
Now, i need to change the ads that are displayed. i can't remember how i got to the editing part of the ads in a blog posts. Can anyone tell me which way to turn?

http://wordpress.org/extend/plugins/datafeedr-ads/